Species: Lepraria vouauxii
Photos: On limestone wall. Teampall Chronain, the Burren, Ireland
BLS Burren meeting 2009
The thallus is a diffuse, thickish crust of pale greyish-green granules with +/- indistinct lobed margins and white medulla. Sterile, apothecia are unknown.
Occurs on surfaces sheltered from rain on intermediate or basic walls, mortar and bark. Avoids very acidic substrata.
Thallus K+ dirty yellow to orange, C+ dirty yellow, P+ orange or orange-yellow, UV-
Lepraria vouauxii. BLS Burren meeting, April 2009